Vacuum-pan



(No Model.) 2 Sheets.Sheet 1. C. HARRIMAN.

VACUUM PAN.

No. 350,360. Patented Oct. 5, 1886.

%f@ INVENTOR ATTORNEYS WITNESSES (No Model.) 2 Sheetssheet 2'. O.HARRIMAN.

VAGUUM PAN.

No. 350,360. Patented Oct. 5, 1886.

4- w D Y i ii e1 a J, x x i 4f 5 J 3 4/ o o o 82 I I I G F 0 O 0 O O O ar WITNE$SES l I INVEN'LE'OR I 7 g2 iz ATTORNEYS N. PETERS.Photo-.Lilhogmphur, Washington. D. c.

UNITED STATES PATENT OFF CE.

CHARLES HARRIMAN, OF YONKERS, N EW' YORK.

VACUUM-PAN.

.srncirrcArioiv forming part of Letters Patent NQ 350,360, dated October5, 1886. 4 Application filed December 11, 1885. Serial No. 185.315. (X0model.)

To all whom it may concern.-

Be it known that I, CHARLES HARRIMAN, of Yonkers, in the county of\Vestchester and State of New York, have invented certain new and usefulImprovements in Vacuum-Pans; and I do hereby declare that the followingis a full, clear, and exact description of the invention, which willenable others skilled in the art to which it appcrtains to make and usethe same, reference being had to the accompanying drawings, which form apart of this specification, and in which- Figure 1 is a sectionalelevation of my improved stationary horizontal vacuum-pan. Fig. 2 is anend view of the brick-work, showing the upper and lower tubes,man-hole,and Vacuum-pipe. Fig. 3 is a sectional elevation of my improvedportable horizontal vacuumpan mounted on wheels. Fig. 4 is an end viewof same.

Like letters of reference indicate corresponding parts in all thefigures.

The object of my invention is to provide a stationary or portablehorizontal vacuum-pan which can be worked with less fuel and can be morereadily kept at a uniform temperature than those heretofore used for thesame purpose. The temperature being more uniform will preventcarbonization taking place during the process of evaporation, as inhiglrelass and costly acids, where crystallization takes place at atemperature of 170Fahrenheit.

I paratus can also be used for the extracting of liquids from fruits,vegetables, eggs, or fertilizing materials,in which case the uniformtemperature allows the evaporation to take place at a lower temperature,thus preventing the materials from carbonizing, the agitator being usedwhen the material thickens to accelerate evaporation.

In carrying out the object of my invention for the purpose ofevaporating at a low or high uniform temperature, I have constructed myimproved horizontal vacuum-pan, made of copper or other metals ormaterials, inside a cylindrical water-jacket or boiler, made ofwrought-iron plates, where the water may be heated by'the jacket orboiler-shell eomingin direct contact with the furnace upon which it isfixed in the one case, and in the other form- My apboiler is' somewhatafter the construction of a steam-generator, from the fact that afterthe gases leave the fire they pass through one half ofthe tubes to thefront end of the water -j acket or boiler, then returning through thetop section or other half of the tubes to the smokestack. ture ofthelwater which surrounds the pan in which the acids, liquids, or othermaterials are evaporated. The temperature can be regulated by aself-regulating damper adjusted by the pressure or blowing of the waterand feeding with cold water or by adding fresh coal to the furnace, sothat the heat may easily be re duced from the boiling-pressure to 100Fahrenheit, as desired. the water-jacket or bfoiler itwill be seen thatthejacket is extended at each end, and on the extension'the cast-ironends are riveted thereon for securing and closing the vacuum-pan, thecover on one end being for a stationary joint, and it has a glandriveted on same to receive a shaft which carries a number of arms orknives for somewhat agitating or producing ebullition at a lowtemperature, thereby assisting evaporation. At the opposite end there isa fixing for carrying the other end of the shaft, which is independentof the outside cover, the cover with a stationary gasket for making thejoint being hinged on the cast-iron end riveted to the water-jacket orboiler extension, to facilitate the cleaning out of the vacuum-pan, thebolts for making thejoint being hinged in the center, so that they maybe turned back on their centers when the cover is opened. Each outsidecover is made of copper, and a east-iron flange riveted thereon formaking the joint, and have eyeglasses, liquorgages, feed and dischargepipe. Attachedto the water-jacket or boiler-shell by a pipe is amud-drum, in which the feed and blow-01f pipes are connected. In aportable apparatus the feed and blow-off pipes are connected to thewater-space around the fire-box. The vapor pipe is taken from the centerof the vacuumpan, and passes through the cylindrical waterjacket orboilerto a man-hole, where the cover 01 the man hole can be made for agland-joint.

In this way I get a uniform tempera- I From :the tube-heads of 0n theside of said man hole the safety-valve is attached. The vacuum pipe canbe then attached to an exhaust-blower, steam-jet overflow-condenser. andpump.

The apparatus, when complete for station ary use, is built up in abrick-work at each end, is faced with castings for a t'urtmce-frout onone side and ash-door at the other side. It will be seen that thefurnace is of ordinary construction, and the direct course of the gasesis through the combustion-rhamber and through the lower half of thetubes. where it returns through the top or other half of the tubes tothe return-flue, upon which a smokestack is attached, and when theapparatus is made for portable use the lower tubes are shorter than theupper tubes just so much as is taken up by the furnace which is madewith a water-space around it and forms part of the cylindricalwater-jaeket or boiler. The gases from the furnace in this case gothrough the lower or shorter tubes and in a combustionehamber, andthence through the upper tubes to the smoke-stack. The ends of thevacuunr pan are as before described, and the vaporpipe istaken from thecenter through the eylindrieal water-jacket or boiler and through theman-hole, and the only difference between the stationary and portableone is that one iS formed wholly of iron and mounted on travelingwheels, so that horses can be attached for taking it into the roads,where it may be used for evaporating tan-bark, maplesugar, and othermaterials.

In Figs. 1 and 2 of the drawings I have shown a sectional drawing of mystationary horizontal vaeuuurpan, and in which A represents thevacuumpau, and 13 represents the water-jacket or boiler with extendedends. G represents the tube'heads, in which the tubes D are expanded andsecured. E is the castiron ends for securing and closing the vacuum-pan.F is the cover, whichis hinged withits stationary gasket to facilitatethe cleaning out of the vacuum-pan. G is the cover for a stationaryjoint, and on which the gland for riveted. H are the eye theagitating'shaft is J are the liquidgages,

glasses on the cove on the side of which a feed for the liquid canssoeeo be attached. J is the discharge pipe. K is the agitating-shaft. Lis the arms or knives for agitating the liquid for producing ebullitionand assisting evaporation. M is the ti.\'- ing for carrying the end ofthe agitating shai't. N is the vacuum-pipe in the center of thevacuuni-pan. O is the cast-iron man-hole on the water-jacket or boiler,through which the V21- por-pipe passes. P is the gland on which is thejoint between vapor-pipe and the water-jacket or boiler. Q is thesafety-valve for relieving the pressure. It is the pipe connecting themud-drum with the water-jacket or boiler. S is the mud drum. T is thefeed-pipe to the water jacket. U is the blow-off tap. V is the ash-doorin the cast-iron front. is the furnace, the door of which is in thecustiron front. X is the ash-pit. Y is the combustionchamber, and Z isthe smoke-stack.

In Figs. 3 and i, A represents the vacuum pan, and B represents thewater jacket or boiler, with the ends extended for securing thecast-iron ends, and the fire-box IV, with the waterspace around it, allletters of refer once for other parts being the same as referred to inFigs. 1 and 2, except the traveling wheels, which are marked S.

I clain1- 1. In a vacuum-pan, the horizontal tub-s placed in theWater-jacket or boiler B, substantially as and for the purposesspecified and set forth. 7

2. In a vacuum-pan, the combination of the horizontal water-jacket orboiler 13, with tubes or lines I) man-hole 0, cover and gland l, withfurnace W, and fire-box IV, substantially as and for the purposedescribed and set forth.

3. In a vacuum-pan, with water jacket or boiler, the combination of thecast-iron ends 5, the hinged cover F, and stationary cover (l, forclosing the vacuum-chamber, substantially as described, for the purposeset forth.

In testimony that I claim the foregoing as my own I have hereuntoaffixed my signature in presence of two witnesses.

CHAS. IIARHIMAN. -Witnesses:

"W. H. \VOOD, Issac L. SINK.

